Sound-box for talking-machines.



,1. 11. ENGLISH. SOUND BOX FOB, TALKING MACHINES.

APPLIOATION FILED OUT. 27, 190B.

Patented Aug. 22, 1911.

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ATTORNEY WITNESSES J. O. ENGLISH. SOUND BOX FOB. TALKING MACHINES.

5 APPLICATION FILED OCT. 27, 1908.

1,001,004, Patented Au .'22,1911.

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A TTORNEY APPLIQA'TION FILED 00127, 1908.

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JOHN C. EnGLIsH, or cafinsiv, NEW JERSEY, assren'on To vroron TALKING MACHINE COMPANY, A CORPORATION on NEW JERSEY.

' soimnrnox r03 TALKING-IYJEACHINES.

Specification. of Letters Patent. Patented ARM-22, 1911- Application filed October 27, 1908. semi No. 459,713.

To all whom it may concern: e

Be it known that I, Jorrx C. ENGLISH, a citizen of the United States, and a resident of the city of Camden, county of Camden, and .State of New Jersey, have invented certain new and .uscful Improvements in Sound- Boxes for Talking-llachines, of which the following is a- 'full, clear, and exact disclosure, reference being hadto the accompanying drawings, fo'i'ming a part of this specification.

The main objects of this invention are to provide an improved sound box having a stylus bar mounted to oscillate upon an axis perpendicular to the face of the record when the bar is in operative position; to provide an improved sound box in which the diaphragm maybe removed from the box without disconnecting the stylus bar from its mounting; to provide an improved stylus.

bar and mounting therefor; and toprovide other improvements as' will appear hereinafter.

In the drawings, Figure 1 is a side elevation of a talking machine constructed in accordance with this invention; Fig. 2 a top plan view of the same with the amplifier shifted; Fig. 3 a front elevation of a sound box constructed in accordance with this in ventiqn; Fig. 4 :1 Sid elevation of the same; Fig. 5 a top plan vi w; and Fig. 6a bottom plan view of thesaine partially 'in section on the line 6 of F 1g. 3; Fig. 7 a modified form of the sound box of this in-. ventionj Figs. 8, Q-and 10 are respectively a side elevation, a't-op plan view, and a bottom plan view partly in sect-ion, on line 10-40 of Fig. 7, of the same.

Referring to the drawings, the preferred embodiment. of'this invention comprises the --usual-ealnnet or casing 1, carrying a substantially horizontal record support 2, rotated by the usual jmechanism within the casing to tiirnthe record 3, which is of the disk type, having laterally undulating sound grooics of miform depth. The bracket 4, rigid with the casing, the radial hollow tapering sound box arm 5, supported at one end by the bracket 4-, to swing in a lane parallel to the face of the record, an the tubular goose neck 6, pi voted uponan axis parallel to the lac;- ol" the record to the free end of the. radial arm la-nd communicating therewith, are of well-known construction.

The preferred form of sound box 10, used 'in this invention, and shown in Figs..1 to

wardly extending peripheralflange 17, the

rear portion of which telescopes over theback plate 11, and fits snugly in the recess formed betweenthe flanges l3 and 14 of the back plate, being secured in position by means of screws 18, which pass through the outwardly extending flange 14 of the backplate and into the rear edge of the flange 17 of the cover. Secured to the rear face of the back of the Lox by means of the screws 19 is the usual yielding tubular extension 20, of rubber or other'similar material, having a non-yielding lining 21, of brass or other similar metal, whereby the sound box is telescopically connected over the outer end of the-tubular support (3. In the soundv box the usual diaphragm 25 is mounted between annular gaskets 26, which are held in position between the back and cover of the casing,- the diaphragm being in a plane substantially perpendicular to the face of the record, and being substantially midway between the front. and inner surfaces of the casing, thus forming chambers of substantially similar form and equal capacity on each side of the diaphragm.

The stylus bar, as shown in its 0 rativeposition in Figs. 1 and 2 of the rawing,

and as shr wn irrdetail in Figs. 3 to 6, com-.

prises a substantially. vertical rigid intermediate portion 30, which extendsover the .lowerportion of the front of the cover of the box, being spaced slightly therefrom. Integral with the upperehd of this vertical portion is a slightly yielding resilient arm 31, which tapers inwardly, and which extends in a horizontal plane to a point 32 spaced between the vertical portion ot the bar and the center of the diaphragm,'thcn curves away from the face of the box 33 to a point substantially opposite the center of ing axially of the box, and having an en-' of a screw 36 through the diaphragm, or in the box, then curves towardthe face ofthe box, forming a'loo'p projecting laterally beyond the center of the box, and terminates adjacent -the center of the diaphragm in a short stud 34 integral with the bar extendlarged inner end 35, which is secured against the outer surface of the diaphragm by means any other suitable manner. It has been found that the comparatively slender taper,

ing and curved construction of the arm 31, connecting the upper end of the stylus bar to the diaphragm gives better results in the reproduction of sound than would be ob 'tained were the arm more nearly straight and rigid. The lower end 37 of the vertical portion of the stylus bar is turned downwardly and laterally outward in an oblique directlon, and is provided with the usualv socket 38 for the reception of the stylus 39,

- which is held-in position by the thumb screw 40. For mounting the stylusbar, to oscillate upon" a vertical axis perpendicular to the face of the record or record support,

the vertical. central portion'of the bar is p vided with a pair of inwardly extending Sm lugs 41, which are positioned at the lower end and adjacent the upper end of the vertical portion of the bar res ectively, the

- lower lug having a downwardly pro'ecting portion '42.

These lugs are provideupon their inner surfaces with slots 43, in vertical alinernent and in a plane normally substantially parallel to the face of the box, in each of which is secured one end of a yielding connection 44, which preferablyconsists of a flat piece of tempered steel, but which may be made of any other yielding 111aterial,-such as copper, or fabric of any sort. The ends of these yielding connections are-brazed or fastened in place by any suitable means.

' For connecting the stylus bar to the cover of the sound box, a vertical eleat or-rib' 45 is secured to-the face of the cover by means of screws 46. This rib is of a length equal tothe distance from the lower end of the lower lug 41 of the stylus bar to the u per edge of the upper yielding connection 9 the bar, and the cleat is provided with longitudinal slots corresponding to and in allnement with theslots of the bar respectively,.

to receive the inner ends of the spacedyield-. ing connections which are rigidly secured in place. This clcat is-substantially parallel to the vertical-central portion 30 of the bar,-

and the adjacent edges of the cleat and ends of the lugs 41 upon the bar are in close proximity.

The modified forni of sound box construct- I ed in accordance with this invention, shown in Figs; 7 to 10, is similar in construction to that already described, but the stylus barand its mounting are located upon the righthand side of the front of the box instead of upon the left-hand side, as in the form first described. 'In this modified-form, the stylus bar is between the center of the diaphragm and the vertical cleat 35, upon which the bar is mounted, and the lower end 26 of timber extends obliquely'downw'ard and toward the central vertical plane of the sound box, thus bringing the free end of-the stylus japproximately beneath the center of gravity of the box, Whereas in the first form described, the free end of the stylus diverges away from the central vertical plane of the box, and is at a greater distance from the plane.

This improved sound box incither form shown is adapted to be used eitheuwith a disk or cylindrical record having a laterally undulating sound groove or ridge of uniform depth or height, and in either case the box is mounted so that the axis of oscillation of the stylus is, at all times when the sound box is in its operative position, substantially perpendicular tothe plane tan gent to the face of the record at the point of contact of the stylus. thus held at all times when in operation rigidly against being caused to oscillate on its axis by any pressure on the stylus perpendicular to the plane of the record at its point of contact, such, for instance, as would be caused by theweight of the sound box, but is permitted to respond readily to any lateral pressure.

The stylus bar is plate and a removz le cover, a diaphragm between said plate and. cover, an elongated cleat on said covcr'and a stylus bar mounted by means of-spaced flexible supports onsaid cleat, said supports being disposed in a-linement on said-cover.

3. In a sound box, the combinationwith a casing having a'removable cover, an elon-.

gated cleat secured to said cover, of a stylus bar mounted .by'means of spaced flexible supp'orts onsaid cleat,'said supports bein dis osed in a plane with the axls'of'sai sty us bar.

4-. In a sound box, the combination with a stylus bar, of flexible supports therefor spaced in longitudinal alinement at one side thereof.

5. In a sound box, the combination with a stylus bar, of flexible supports therefor spaced longitudinally thereof.

(3. In a sound box, a stylus bar having an intermediate rigid longitudinal portion, and pliant supports for said bar spaced longitudinally of said portion.

7. In a sound box, a diaphragm, a stylus bar having an intermediate rigid longitudinal portion, and pliant supports for said bar spaced longitudinally of said portion, preventing oscillation of said bar in a plane parallel with said diaphragm, but permitting free vibration in a direction transverse thereto.

8. In a sound box, the combination with a diaphragm, of a stylus bar having an intermediate rigid longitudinal portion, a

yielding connection between one end of said portion and said diaphragm, means for supporting a stylus at the other end of said portion, and spaced pliant supports for said bar so arranged as to prevent pressure on said diaphragm due to the weight of said box.

9. In a sound box, the combination with adiaphragm, of a stylus bar having an intermediate rigid longitudinal portion, a yielding connection between one end of said portion and said diaphragm, means for supporting a stylus at the other end of said portion, and flexible supports for said bar spaced longitudinally of said intermediate portion.

10. Ina sound box, the combination with a diaphragm, of a stylus bar having an intermediate rigid longitudinal portion, a yielding connection between one end of said portion and said diaphragm, means for supporting a stylus at the other end of said portion, and spring supports for said bar spaced longitudinally of said intermediate portion. v L

11. In a sound box, the combination comprising a casing, a diaphragm, asingle elongated cleat secured to said casing, a stylus bar having an intermediate rigid longitudinal portion, a tapering curved resilient c nnection bettveen one end of said portion and said dia ihragm, means at the other end of said portion for carrying a stylus, and 'alined pliant means resiliently securing said bar to said cleat, said pliant means extending from one side of said clout to one side of said bar and i'i'iaintaining said combination with a sound be supported in coiiperative relation with' with and on one side thereof to said casing and extending in a plane with the axis of said bar, and an arm connecting said stylus bar and said sound producing means.

13. In sound reproducing mechanism, the combination with a casing, of means within said casing arranged to reproduce sound, a stylus bar, spaced pliant supports on one side of said stylus bar detachably connected with said casing and adjustable in a plane parallel with said sound reproducing means, and an arm detacha-bly connecting said bar and said sound reproducing means.

14. In sound reproducing mechanism, the combination with a sound box arranged to be supported in cotiperative relation with a sound record disk, of a diaphragm operatively mounted in said sound box, a stylus bar provided with flexible supporting means in vibratory relation with said box and ar ranged to be supported thereby to vibrate on an axis perpendicular to said sound record disk, and a stylus needle extending in oblique relation with respect to the axis of said stylus bar and arranged to operatively engage said sound record disk and vibrate said diaphragm.

15. In sound reproducing mechanism, the 1 combination with a casing, of a diaphragm operatively mounted in said casing, a stylus bar having spaced flexible supports projecting from one side thereof, detachably engaged in rigid relation with said casing and having its axis of vibration perpendicularly disposed, a tapering resilient arm extending from said stylus bar to said diaphragm, and means arranged to detachably secure said arm to said diaphragm. I

16. In sound reproducin mechanism the box arranged to actuating means, of means within said box arranged to produce sound, a stylus bar flexibly supported from one side thereof with respect to said box and having its axis of vibration substantially parallel with a perpendicular to said actuating means, a detachably secured connection between said bar and the sound producing mechanism in said box, and a stylus needle carried by said bar arranged to cooperate with said actuating means.

17. In a sound box, the combination with a diaphragl'n, of a stylus bar, plane flexible supports for said bar secured to a cleat or standard on one side of said bar, spaced apart and extending in the same plane substantially parallel with said diaphragm, preventing pressure on said diaphragm other than the normal vibrations.

18. In a sound box, the combination with adiaphragm, of a stylus bar having a rigid extension, plane flexible supports for said bar SBUIGd to a cleat spaced apart and dismy hand this 26th day of October, A. D., posed in vertical alinement substantially 1908. parallel with said diaphragm and preventing the. movement of said stylus bar relative I JOHN ENGLISH 5 to saidv diaphragm other than its normal l/VHQQSSGSI vibratory movement. ALsToN B. MOULTON,

In witness whereof, I have hereunto set ALEXANDER PARK. 

